Cita APA (7a ed.)

International Symposium on Structural and Functional Organization of the Placenta ( 1981: Hamburg), Kaufmann, P., & King, B. F. (1981). Structural and functional organization of the placenta ([s.e.].). S.Karger.

Cita Chicago Style (17a ed.)

International Symposium on Structural and Functional Organization of the Placenta ( 1981: Hamburg), P. Kaufmann, y B. F. King. Structural and Functional Organization of the Placenta. [s.e.]. Basel: S.Karger, 1981.

Cita MLA (8a ed.)

International Symposium on Structural and Functional Organization of the Placenta ( 1981: Hamburg), et al. Structural and Functional Organization of the Placenta. [s.e.]. S.Karger, 1981.